Dobby pattern-cylinder.



'A. A. GORDON, In.

DOBBY PATTERN CYLINDER.

APPLICATION FILED MAR. 25. 1914.

l Ratented July 6, 1915.

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zel OO OOO OOOOOOOO!OOOOOOOO jur lill di f ALBERT A. GORDON, JR., 0FWORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 6r, KNOWLES LOOM WORKS,OF-WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BOBBY PATTERN-CYLINDER.

Specification of Letters Patent.

T 0 all whom t may concern Be it known that I, ALBERT A. GORDON, Jr., acitizen of the United States, residing at `Worcester, in the county ofWorcester and State oi" Massachusetts, have invented a new and usefulDobby Pattern-Cylinder, of which the following is a specification.

This invention relates to a dobby pattern cylinder and particularly toimproved means for positioning and driving pattern chains supportedthereon.

It is the principal object of my invention to provide a dobbypatterncylinder which is equally adapted to drive chains formed of fulllength bars and chains formed of short-length bars.

With this object in view, my invention consists in the provision of acircumferentially adjustable member mounted upon the hub of the patterncylinder and adapted, when in one position, to coperatewith and drivechains composed of full length bars and, when in another position, tocoperate with and longitudinally position chains com` posed ofshort-length bars. s

My invention further consists in certain devices, arrangements andcombinations of parts which will be hereinafter described and morespecifically pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which*Figure 1 shows a portion of a. dobby with the pattern cylinder shown insection and in its operative position; Fig. 2 is a side eleva tion ofthe pattern cylinder, the parts being adjusted to cooperate with chainshaving short length bars; Fig. 3 is a section taken along the line 3--3of Fig. 2; Fig. 4 is a side elevation similar to Fig. 2 but having theparts arranged to cooperate with a chainl composed of full length bars;Fig. 5 is a section taken along the line 5-5 of Fig. 4, and Fig. 6 is adetail view of the adjustable member.

In Fig. 1 of the drawings the numeral 10 indicates a portion of adobbyframe upon which are pivotally supported a plurality of indicatingfingers 11 and 12. These ngers are mounted to turn upon the transversecylindrical bar 13 and are held in position thereon by a transverse rod14. The lingers 11 cooperate with lifter rods 15 through which the upperhooks of the dobby (not shown) are controlled. The fingers 12 areup-turned at their operative ends and cooperate directly with the lowerhooks ot the dobby (not shown). rihe pattern cylinder 16 is mounted inthe frame 10 to rotate beneath the indicating lingers and serves to movethe bars 17 of the pattern chain intermittently under the fingers 11 and12. These bars are provided with projecting studs 1S which lift theindicating iingers and thus control the hooks of the dobby.

The mechanism thus far described is of the usual :form and constitutesno part of my present invention.

In the operation oic a dobby oi: this type it is sometimes desirable touse a pattern chain `formed of full length bars such as are shown at 19in Fig. 4 and at other times it is desirable to use two chains eachcomposed oit short-length bars such as are shown at 2O in Fig. 2.

My present invention relates to means `lor adapting a single patterncylinder so that it may position and operate chains oiE either type.

My improved pat-tern cylinder comprises a hub 21 having a. flange ateach end and having two separated of projections intermediate said'flanges'. The inner face of each flange is beveled to correspond withthe bevel on the end of the pattern chain bars and the flanges thusserve to position the bars longitudinally upon the cylinder.

It will be evident from inspection of Fi 4 that the bars 19 extend thefull length of the cylinder between the two ilanges 22 and that anyobstruction in the line of the recesses formed between the' projections23 would render the cylinder inoperative for such bars. Inspection ofFig. 2 will also show that when chains composed of shortlength bars 2Oare in use there is a space between the inner ends of the bars and thatprovision must necessarily be made to prevent longitudinal movement ofthe bars away from the flanges 22. In order to provide for these twoconditions of operation, I have secured to the hub 21 between theprojections 23 a circumferentially adjustable member 24 having aplurality of projection lugs 25 formed thereon. rIhese lugs 25correspond in transverse section to the transverse section of theprojections 23 and they correspond in longitudinal section to the angleoi the inner faces oi" thetlanges 22. The member 24 is provided with aslot 26 and :is secured Patented July 6, 1215. y

to the hub 21 by a screw 27 passing through said slot. For convenienceof manufacture the member 2li is usually formed in two semi-circularparts, each part being provided with aslot and screw connection for adjustably securing it to the hub. When it is desired to use the cylinderwith a chain composed of full length bars, the member 2l is moved to theposition shown in Fig. et in which the lugs Q5 are longitudinally alinedwith the projections Q3. In this position they do not interfere with thebars 19 and furthermore they cooperate with the projections 23 indriving the pattern chain. Wlhen it is desired to use chains composed ofshort-length bars, the member 24C is adjusted in the position shown inFig. 2 in which the lugs 25 are alined with the recesses between theprojections 23. ln this position ythe beveled sides of the lugs 25cooperate with the beveled inner faces of the flanges 22 to position thepattern chain bars longitudinally.

Vhile lhave described my invention as embodied in a dobby patterncylinder, it is obvious that it may be used in any mechanism in whichsimilar pattern chains are provided. Furthermore it will be evident thatmany changes and modifications can be made in my invention withoutdeparting from the spirit and scope thereof and l do not wish to belimited to the precise details herein disclosed, but

What I do claim is y 1. A pattern cylinder comprising separated sets ofchain-driving projections, a flange at each end of the cylinder for positioning the pattern chain bars longitudinally, and a membercircumferentially adjustable between said sets of projections andeffective in one position to coperate with said projections to drivefull length pattern bars and in another position to cooperate with saidflanges to longitudinally position short-length pattern bars.

2. A pattern cylinder comprising a hub, separated sets of chain-drivingprojections mounted thereon, a flange on each end of said hub, a membercircumferentially adjustable on said hub between said sets ofprojections and having a plurality of lugs thereon corresponding intransverse section to said projections and in longitudinal section tothe inner angle of said flanges, and means to hold said member inadjusted position with said lugs effective to separate full lengthpattern bars laterally or to separate short length pattern barslongitudinally.

3. A pattern cylinder comprising a hub, separated sets of chain-drivingprojections mounted thereon, a flange on each end of said hub, and amember circumferentially adjustable on said hub between said sets oit'projections and having a. plurality of lugs thereon corresponding intransverse section to said projections and in longitudinal section tothe inner angle of said flanges, said member and said hub having a slotand screw connection effective to hold said lugs in longitudinalalinement with said projections or in alinement with the recessesbetween said projections as desired.

el.. A pattern cylinder comprising a hub, separated sets ofchain-driving projections mounted thereon, a flange on each end of saidhub, and a member circumferentially adjustable on said hub between saidsets of `projections and having a j'ilurality' of lugs thereoncorresponding in transverse section to said projections and inlongitudinal section to the inner angle of said flanges, said membercomprising` a plurality of parts each having a slot and screw connection with said hub effective to hold said lugs in longitudinalalinement with said projections or in alinement with the recessesbetween said projections as desired.

ln testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

ALBERT A. eoRDoN, JR.

lVitnesses E. H. RYON, E. F. GREEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

" Washington, D. C.

